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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dinesh khalmaniya 1
To solve this question remember some points. 1) fluorides of all s block elements are ionic except BeF2 2) chloride, bromide, iodide of Li,Be,Mg,Al are covalent 3) hydrated AlCl3 is ionic while anhydrate AlCl3 is covalent. now you can solve this question easily (i) BeF2 - covalent (ii) AlF3 - ionic (III) AlCl3 - covalent (IV) AlCl3.6H2O - ionic